/Engine/Plugins/EnhancedInput/Source/EnhancedInput/Public/EnhancedPlayerInput.h
UEnhancedPlayerInput:UPlayerInputextensions for enhanced player input system
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)() class UEnhancedPlayerInput : public [UPlayerInput](API\Runtime\Engine\GameFramework\UPlayerInput)
uint8:  1
bIsFlushingInputThisFrame
If true, then FlushPressedKeys has been called and the input key state map has been flushed.
FName
CurrentlyInUseAnyKeySubstitute
If there is a key mapping to EKeys::AnyKey, we will keep track of what key was used when we first found a "Pressed" event.